NO803716L - ISOLATED WIRING WIRE IN TRANSFORMERS AND OTHER INDUCTIVE DEVICES - Google Patents
ISOLATED WIRING WIRE IN TRANSFORMERS AND OTHER INDUCTIVE DEVICESInfo
- Publication number
- NO803716L NO803716L NO803716A NO803716A NO803716L NO 803716 L NO803716 L NO 803716L NO 803716 A NO803716 A NO 803716A NO 803716 A NO803716 A NO 803716A NO 803716 L NO803716 L NO 803716L
- Authority
- NO
- Norway
- Prior art keywords
- conductor
- winding
- parts
- manager according
- adhesive joint
- Prior art date
Links
- 230000001939 inductive effect Effects 0.000 title claims description 4
- 239000004020 conductor Substances 0.000 claims description 102
- 238000004804 winding Methods 0.000 claims description 60
- 239000000853 adhesive Substances 0.000 claims description 23
- 230000001070 adhesive effect Effects 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 22
- 125000006850 spacer group Chemical group 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 9
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- 229920002678 cellulose Polymers 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 3
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- 239000007788 liquid Substances 0.000 description 2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
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- 238000005238 degreasing Methods 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S174/00—Electricity: conductors and insulators
- Y10S174/13—High voltage cable, e.g. above 10kv, corona prevention
- Y10S174/14—High voltage cable, e.g. above 10kv, corona prevention having a particular cable application, e.g. winding
- Y10S174/24—High voltage cable, e.g. above 10kv, corona prevention having a particular cable application, e.g. winding in an inductive device, e.g. reactor, electromagnet
- Y10S174/25—Transformer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S174/00—Electricity: conductors and insulators
- Y10S174/13—High voltage cable, e.g. above 10kv, corona prevention
- Y10S174/30—High voltage cable, e.g. above 10kv, corona prevention having insulation with a particular dimension or geometry
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
Description
Ved kortslutning i transformatorer oppstår krefter i viklingene som fører til at viklingen knekkes, dersom den ikke er tilstrekkelig motstandskraftig eller godt avstøttet. In case of a short circuit in transformers, forces arise in the windings which cause the winding to break, if it is not sufficiently resistant or well supported.
En metode til å øke knekkholdfastheten av en viklingA method to increase the buckling strength of a winding
og dermed motstandskraften mot kortslutningskrefter er å øke tykkelsen av den leder som med omgivende isolering anvendes for å bygge opp viklingen. En økning av lederens tykkelse fører imidlertid til økede tilleggstap og eventuelt til pro-blemer med lokalt høye temperaturer i viklingen. Viklingen blir dessuten overdimensjonert i elektrisk henseende og mer plasskrevende. and thus the resistance to short-circuit forces is to increase the thickness of the conductor which, with surrounding insulation, is used to build up the winding. However, an increase in the thickness of the conductor leads to increased additional losses and possibly to problems with locally high temperatures in the winding. The winding is also oversized in electrical terms and takes up more space.
Det er kjent å redusere tilleggstapene ved å anvende kontinuerlig transponerte ledere ved oppbygning av transfor-matorviklinger. Slike ledere er bygget opp av flere lakkerte lederdeler med hovedsakelig rektangulær form, som i en felles, omhyllende isolering, vanligvis i form av en papiromspinning, It is known to reduce the additional losses by using continuously transposed conductors when constructing transformer windings. Such conductors are made up of several lacquered conductor parts of mainly rectangular shape, as in a common, enveloping insulation, usually in the form of a paper wrapping,
er anordnet parallelle i minst to rekker. I hver enkelt rad kan en lederdel være anordnet med en flatside vendt mot en flatside i en tilstøtende lederdel. Hver lakkert lederdel kan være forsynt med et overtrekk av en harpiks, som er uherdet eller halvt herdet, slik at lederdelene er bevegelige i forhold til hverandre under oppbyggingen av en vikling. Den uherdede eller halvt herdede harpiks herdes først etter at viklingen har fått sin endelige form, vanligvis i forbindelse med tør-kingen av viklingen. På grunn av de mange lederdeler og lederens grovhet er lederen vanskelig å vikle og lar seg ikke anvende for kompliserte viklinger, såsom f.eks. stabiliserte skiveviklinger på grunn av de nødvendige overganger mellom en skive og en tilgrensende skive i slike viklinger. Kontinuerlig transponerte ledere anvendes derfor normalt bare for vik- are arranged parallel in at least two rows. In each individual row, a conductor part can be arranged with a flat side facing a flat side in an adjacent conductor part. Each lacquered conductor part can be provided with a covering of a resin, which is uncured or semi-cured, so that the conductor parts are movable in relation to each other during the construction of a winding. The uncured or semi-cured resin is only cured after the winding has taken its final shape, usually in connection with the drying of the winding. Due to the many conductor parts and the conductor's roughness, the conductor is difficult to wind and cannot be used for complicated windings, such as e.g. stabilized disk windings due to the necessary transitions between a disk and an adjacent disk in such windings. Continuously transposed conductors are therefore normally only used for
linger bestående av et relativt lite antall vinninger av lederen anordnet i et skikt på en isolersylinder og da spesi- windings consisting of a relatively small number of turns of the conductor arranged in a layer on an insulating cylinder and then spe-
elt for reguleringsviklinger.elt for regulation windings.
I henhold til oppfinnelsen har det vist seg mulig å til-veiebringe en leder av hvilken det kan dannes en vikling med høy knekkholdfasthet og lave tilleggstap, og som egner seg utmerket for fremstilling av sogar kompliserte viklinger, så- According to the invention, it has proved possible to provide a conductor from which a winding with high kink resistance and low additional losses can be formed, and which is excellently suited for the production of even complicated windings, so
som stabiliserte skiveviklinger.which stabilized disc windings.
Oppfinnelsen bygger på den innsikt at det er mulig, dersom lederen bygges opp av lederdeler,å anvende uisolerte lederdeler, forutsatt at det mellom lederdelene anordnes isolerende skikt som sikrer at disse ikke kommer i kontakt med hverandre i viklingen. Ved at lederen kun har to lederdeler bibeholder nemlig delene i det alt vesentlige sin opprinne-lige innbyrdes stilling ved bøyning og andre lignende form-endringer. At det er mulig å anvende uisolerte lederdeler er av betydning ut fra et kostnadssynspunkt med hensyn til de meget store lengder av lederen som anvendes i en transformator. Det gir dessuten en høy fyllfaktor. Det isolerende skikt danner i henhold til oppfinnelsen i den ferdige vikling en limfuge mellom lederdelene, slik at lederen etter sammen-føyningen av lederdelene i mekanisk henseende hovedsakelig opptrer som om den utgjorde en enhetlig, massiv leder, hvilket medfører høy knekkholdfasthet, mens den i elektrisk henseende opptrer som to fra hverandre isolerte lederdeler, hvilket medfører lave tilleggstap. The invention is based on the insight that it is possible, if the conductor is made up of conductor parts, to use uninsulated conductor parts, provided that an insulating layer is arranged between the conductor parts which ensures that these do not come into contact with each other in the winding. Because the conductor only has two conductor parts, the parts essentially retain their original relative position during bending and other similar shape changes. That it is possible to use uninsulated conductor parts is important from a cost point of view with regard to the very large lengths of conductor used in a transformer. It also provides a high filling factor. According to the invention, the insulating layer forms in the finished winding an adhesive joint between the conductor parts, so that after the joining of the conductor parts, the conductor mainly behaves in mechanical terms as if it formed a uniform, massive conductor, which results in high buckling strength, while in electrical in this respect it acts as two conductor parts isolated from each other, which results in low additional losses.
Nærmere bestemt tilveiebringes der ved hjelp av oppfinnelsen en med isolasjon forsynt leder for dannelse av viklinger for transformatorer og andre induktive apparater, hvilken leder omfatter to inntil hverandre anordnede og fra hverandre isolerte lederdeler av hoveds.akelig rektangulær form. Lederen er karakteristisk ved at to usiolerte lederdeler er anordnet med en flatside av den ene lederdel vendt mot en flatside av den andre lederdel, idet der mellom disse flatsider er anordnet et isolerende skikt av et materiale som kan bringes til å danne en limfuge mellom lederdelene, More specifically, the invention provides a conductor provided with insulation for forming windings for transformers and other inductive devices, which conductor comprises two conductor parts arranged next to each other and insulated from each other of mainly rectangular shape. The conductor is characteristic in that two uninsulated conductor parts are arranged with a flat side of one conductor part facing a flat side of the other conductor part, with an insulating layer of a material arranged between these flat sides of a material that can be brought to form an adhesive joint between the conductor parts,
og som inneholder et avstandselement av isolasjonsmateriale for å sikre at lederdelene holdes på avstand fra hverandre. and which contains a spacer element of insulating material to ensure that the conductor parts are kept at a distance from each other.
Induktive apparater andre enn transformatorer kan bl.a. utgjøres av reaktorer og reaktortransformatorer. Inductive devices other than transformers can i.a. consists of reactors and reactor transformers.
Lederdelene er parallellkoblede ved at de er sammen-koblet i endene i en av lederen fremstilt vikling for en transformator eller tilsvarende apparat. The conductor parts are connected in parallel in that they are connected at the ends in a winding produced by the conductor for a transformer or similar device.
Den isolasjon som omgir lederen, kan være av konven-sjonell type og bestå av et med overlapping spiralviklét bånd av cellulosepapir eller av polymerfilm, såsom en film av polyethylenglycoltherefthalat, polycarbonat,polyimid, polyamidimid, polypropylen, polymethylpenten eller polysulfon. Isolasjonen kan også eventuelt bestå av en omvikling av et The insulation that surrounds the conductor can be of a conventional type and consist of an overlapping spirally wound band of cellulose paper or of polymer film, such as a film of polyethylene glycol terephthalate, polycarbonate, polyimide, polyamideimide, polypropylene, polymethylpentene or polysulfone. The insulation can also possibly consist of a wrapping of a
garn av et'av de nevnte materialer.yarn of one of the aforementioned materials.
Som eksempler på egnede materialer for anvendelse av det materiale som kan bringes til å danne limfugen, kan nevnes herdbare harpikser, såsom epoxyharpikser, polyamid-, modifiserte epoxyharpikser, urethanharpikse , isocyanatmodi-fiserte esterharpikser, urethanharpiksmodifiserte epoxyharpikser og visse gummityper, (f.eks. 4684 fra Du Pont, USA) samt termoplastiske harpikser (smeltelim), såsom polyethylenglycoltherefthalat, polyamid og polycarbonat. Materialet som danner limfugen,kan med fordel anordnes i form av en separat film mellom lederdelene. Det er likeledes mulig å anbringe materialet i form av et skikt på i det minste den ene av de to mot hverandre vendte flatsider av lederdelene, ved at en av lederdelene f.eks. bestrykes med en oppløsning av materialet. As examples of suitable materials for the use of the material that can be brought to form the adhesive joint, mention can be made of curable resins, such as epoxy resins, polyamide-modified epoxy resins, urethane resins, isocyanate-modified ester resins, urethane resin-modified epoxy resins and certain types of rubber, (e.g. 4684 from Du Pont, USA) as well as thermoplastic resins (hot-melt adhesives), such as polyethylene glycol terephthalate, polyamide and polycarbonate. The material that forms the adhesive joint can advantageously be arranged in the form of a separate film between the conductor parts. It is also possible to place the material in the form of a layer on at least one of the two facing flat sides of the conductor parts, by one of the conductor parts e.g. is coated with a solution of the material.
Avstandselementet av isolasjonsmateriale i det materiale som danner limfugen, har til oppgave å sikre at lederdelene holdes på avstand fra hverandre og ikke danner kontakt med hverandre, spesielt under limingen, når limfugematerialet er flytende eller mykt. Til tross for at lederdelene er koblet sammen i viklingens ender blir den mangetiske fluks noe for-skjellig i dem, slik at der under drift oppstår en spenning mellom dem. Det er derfor nødvendig med en isolasjon mellom dem. Egnede avstandselementer er massiv film eller papir, The spacer element of insulating material in the material that forms the adhesive joint has the task of ensuring that the conductor parts are kept at a distance from each other and do not form contact with each other, especially during gluing, when the adhesive joint material is liquid or soft. Despite the fact that the conductor parts are connected at the ends of the winding, the mangetic flux is somewhat different in them, so that during operation a voltage arises between them. Insulation between them is therefore necessary. Suitable spacer elements are solid film or paper,
filt eller vevnader av fibermaterialer, såsom fibere av cellulose, polyethylenglycoltherefthalat, polyamid, polyvinyl-acetat, polyacrylnitril, polypropen og glass. I papir eller filt kan fibrene være bundet til hverandre blant annet mekanisk, ved sammenfiltring, eller ved smeltning eller med et adhesiv. Avstandselementet kan være forsynt med gjennomgående porer eller hull, som er fylt med limfugedannende materiale. Papir, filter eller vevnader som anvendes, kan med fordel være tynne. Det er også mulig å anvende som avstandselement konvensjonelle pulverformige fyllstoffer, såsom pulvere av kritt, glimmer, kvarts eller aluminiumoxyd, eller konvensjonelle fibrøse fyllstoffer, såsom fibere av cellulose, glass eller andre ovenfor eksemplifiserte fibermaterialer for papir, filt og vevnader. felt or webs of fiber materials, such as fibers of cellulose, polyethylene glycol terephthalate, polyamide, polyvinyl acetate, polyacrylonitrile, polypropylene and glass. In paper or felt, the fibers can be bound to each other mechanically, by entanglement, or by melting or with an adhesive. The spacer element can be provided with continuous pores or holes, which are filled with adhesive joint-forming material. The paper, filter or tissues used can advantageously be thin. It is also possible to use as spacers conventional powdery fillers, such as powders of chalk, mica, quartz or aluminum oxide, or conventional fibrous fillers, such as fibers of cellulose, glass or other fiber materials exemplified above for paper, felt and woven fabrics.
I henhold til en utførelsesform av oppfinnelsen er materialet som danner limfugen, bragt til å danne denne limfuge før. lederen er blitt formet til en vikling. En fordel med denne utførelsesform er at en slik leder kan fremstilles under anvendelse av et effektivt og regulert trykk på lederdelene, slik at limfugen mellom delene overalt får enhet- According to one embodiment of the invention, the material which forms the glue joint is brought to form this glue joint before. the conductor has been formed into a coil. An advantage of this embodiment is that such a conductor can be produced using an effective and regulated pressure on the conductor parts, so that the adhesive joint between the parts everywhere gets unity
lige egenskaper og delene effektivt festes til hverandre.equal properties and the parts are effectively attached to each other.
En slik leder kan kontrolleres med hensyn til mekaniske og elektriske egenskaper før den formes til en vikling. Da lederdelene er forankret til hverandre i den endelige stilling, Such a conductor can be checked for mechanical and electrical properties before it is formed into a winding. As the leader parts are anchored to each other in the final position,
dvs. slik at deres innbyrdes stilling forblir uendret uten innbyrdes glidning ved dannelse av en vikling og senere behandling, kan lederen uten vanskelighet formes til en vikling med forutbestemte egenskaper. i.e. so that their mutual position remains unchanged without mutual slippage when forming a winding and subsequent processing, the conductor can without difficulty be formed into a winding with predetermined properties.
I henhold til en annen utførelsesform av oppfinnelsen dannes limfugen først etter at en vikling er blitt fremstilt av lederen, dvs. etter at lederen er blitt gitt sin endelige form, og da fortrinnsvis i forbindelse med tørkningen av viklingen, hvorunder den oppvarmes tilstrekkelig til at det limfugedannende materiale vil gi en fuge mellom lederdelene. / Fordi lederen er anordnet med lederdelenes flatsider og det mellomliggende isolerende skikt hovedsakelig i viklingens aksialretning blir den ytre lederdel strukket mer enn den indre lederdel. Derved blir det isolerende skikt i viklingen utsatt for et radialt trykk som fremmer dannelsen av en mekanisk sterk fuge. According to another embodiment of the invention, the adhesive joint is formed only after a winding has been produced by the conductor, i.e. after the conductor has been given its final shape, and then preferably in connection with the drying of the winding, during which it is heated sufficiently so that adhesive joint-forming material will create a joint between the conductor parts. / Because the conductor is arranged with the flat sides of the conductor parts and the intermediate insulating layer mainly in the axial direction of the winding, the outer conductor part is stretched more than the inner conductor part. Thereby, the insulating layer in the winding is exposed to a radial pressure which promotes the formation of a mechanically strong joint.
Oppfinnelsen skal forklares nærmere ved beskrivelse av utførelseseksempler under henvisning til den vedføyede tegning, hvor fig. 1 viser et tverrsnitt gjennom en leder ifølge oppfinnelsen, fig. 2 skjematisk viser en anordning for fremstilling av en utførelsesform av en leder ifølge oppfinnelsen, fig. 3 skjematisk viser en krafttransformator som inneholder alle de for den foreliggende oppfinnelse prinsipielt viktige elementer, men som for oversiktens skyld er forenklet slik at den kun viser én enkelt lavspenningsvikling og én enkelt høyspenningsvik-lirg méd tilhørende gjennomføringer, fig. 4 The invention is to be explained in more detail by describing exemplary embodiments with reference to the attached drawing, where fig. 1 shows a cross-section through a conductor according to the invention, fig. 2 schematically shows a device for producing an embodiment of a conductor according to the invention, fig. 3 schematically shows a power transformer which contains all the fundamentally important elements for the present invention, but which, for the sake of overview, has been simplified so that it only shows a single low-voltage winding and a single high-voltage winding with associated bushings, fig. 4
viser viklingene i større skala, og fig. 5 viser ledere i høyspenningsviklingen i tverrsnitt. Tegningen viser en transformator med lavspenningsviklingen utført som lagervikling og shows the windings on a larger scale, and fig. 5 shows conductors in the high-voltage winding in cross section. The drawing shows a transformer with the low-voltage winding designed as a bearing winding and
høyspenningsviklingen som skivevikling, men oppfinnelsen kan også tilpasses andre viklingstyper. the high-voltage winding as a disc winding, but the invention can also be adapted to other winding types.
På fig. 1 er to rektangulære lederdeler betegnet henholds-vis og 11. Lederdelen 10 er med en flatside 10a vendt mot In fig. 1 are two rectangular conductor parts denoted respectively and 11. The conductor part 10 has a flat side 10a facing
en flatside lia av lederdelen 11. Hver lederdel har en tykkelse på 2 mm og en bredde av flatsiden på 12 mm. Mellom flatsidene er det anordnet et isolerende skikt 12 som inneholder et avstandselement 13. Lederdelene og det isolerende skikt 12 danner til sammen lederen 8. Lederen er omgitt av en omhylling 17 av spiralgående papirbånd. a flat side of the conductor part 11. Each conductor part has a thickness of 2 mm and a width of the flat side of 12 mm. Between the flat sides, an insulating layer 12 is arranged which contains a spacer element 13. The conductor parts and the insulating layer 12 together form the conductor 8. The conductor is surrounded by an envelope 17 of spiral paper tape.
Skiktet 12 er blitt bragt til å danne en limfuge i an-ordningen ifølge fig. 2. The layer 12 has been brought to form an adhesive joint in the device according to fig. 2.
Ved fremstilling av lederen ifølge fig. 1 føres i henhold til fig. 2 to rektangulære, uisolerte lederdeler 10 og 11, som er av kobber og har tykkelse 2 mm og en flatsidebredde på 12 mm, med flatsidene vendt mot hverandre fra forrådsruller 18, resp. 19 gjennom en bremseanordning 20, som gjennom frik-sjon holder delene strukkede under den fortsatte behandling. Deretter føres delene først gjennom en anordning 21 med flere bryte<y>alser, i hvilke delene kaldbearbeides for å øke kobberets hårdhet og deretter gjennom en anordning 22 for rengjøring av delene, hvilken kan bestå av filtkledte dyser eller et ultralydbad med avfetningsvæske. Et 0,15 mm tykt og 12 mm bredt avstandselement 13 i form av en tynn og meget porøs filt, som består av en blanding av polyvinylacetatfibere og polyamidfibere sammenbundet med et2acrylbindemiddel, og som har en overflatevekt på 30 g/m (såsom "Non-woven Storalen 670-30" fra Storå Kopparbergs AB, Sverige), og som dessuten er impregnert med en polyamidmodifisert epoxyharpiks (såsom "AF-42" fra Minnesota Mining and Manufacturing Company, USA), føres fra forrådsrullen 24 via et antall ikke viste bryteruller inn mellom delene 10 og 11. Delene passerer deretter sammen med avstandselementet en høyfrekvensspiral 25, hvor delene oppvarmes. Etter at delene og avstandselementet har passert en styreanordning 26, hvor delene ved hjelp av vertikale valser bringes til å anta samme stilling, føres de inn i en valseanordning 27 med flere horisontale valsepar 28, hvor delene trykkes mot hverandre og sammen-føyes ved at limet (svarende til materialet 12 på fig. 1) i avstandselementet 13 oppvarmes av delene, slik at det herdes til en limfuge. Under denne prosess begynner lederen å kjøles, og den kjøles så ytterligere i kjøleanordningen 29, før den sammenføyede leder går til en spinnemaskin 30, hvor den om-spinnes med papir til en omhylling 17 (fig. 1). Den omspundne leder rulles deretter opp på en rulle 31. Den anvendes i lavspenningsviklingen og med modifiserte lederdimensjoner i høyspenningsviklingen, i transformatoren ifølge fig. 3-5. When manufacturing the conductor according to fig. 1 is carried out according to fig. 2 two rectangular, uninsulated conductor parts 10 and 11, which are made of copper and have a thickness of 2 mm and a flat side width of 12 mm, with the flat sides facing each other from supply rolls 18, resp. 19 through a braking device 20, which through friction keeps the parts stretched during the continued treatment. The parts are then first passed through a device 21 with several breakers, in which the parts are cold-worked to increase the hardness of the copper, and then through a device 22 for cleaning the parts, which may consist of felt-covered nozzles or an ultrasonic bath with degreasing liquid. A 0.15 mm thick and 12 mm wide spacer element 13 in the form of a thin and very porous felt, which consists of a mixture of polyvinyl acetate fibers and polyamide fibers joined together with an acrylic binder, and which has a surface weight of 30 g/m (such as "Non- woven Storalen 670-30" from Storå Kopparbergs AB, Sweden), and which is also impregnated with a polyamide-modified epoxy resin (such as "AF-42" from Minnesota Mining and Manufacturing Company, USA), is fed from the supply roll 24 via a number of breaker rolls not shown in between the parts 10 and 11. The parts then pass together with the spacer element a high-frequency spiral 25, where the parts are heated. After the parts and the spacer have passed a control device 26, where the parts are brought to the same position by means of vertical rollers, they are fed into a roller device 27 with several horizontal pairs of rollers 28, where the parts are pressed against each other and joined by the glue (corresponding to the material 12 in Fig. 1) in the spacer element 13 is heated by the parts, so that it hardens into an adhesive joint. During this process, the conductor begins to cool, and it is then cooled further in the cooling device 29, before the joined conductor goes to a spinning machine 30, where it is re-spun with paper into a casing 17 (Fig. 1). The wrapped conductor is then wound up on a roller 31. It is used in the low-voltage winding and with modified conductor dimensions in the high-voltage winding, in the transformer according to fig. 3-5.
I transformatoren ifølge fig. 3 -5 betegner 41 en høy-spenningsgjennomføring, 42 en lavspenningsgjennomføring, 43 transformatorhuset, 44 pressflenser, 45 en isolert støtte for lavspenningsanslutningen 46, 47 mellomlegg av tre, 48 lavspenningsviklingen, 49 høyspenningsviklingen, 50 jern-kjernen, 51 mellomlegg av presspan, 52 ledere i høyspennings-viklingen og 53 isolersylindere av presspan. In the transformer according to fig. 3 -5 denote 41 a high-voltage bushing, 42 a low-voltage bushing, 43 the transformer housing, 44 compression flanges, 45 an insulated support for the low-voltage connection 46, 47 wooden spacer, 48 the low-voltage winding, 49 the high-voltage winding, 50 the iron core, 51 spacer of pressed sheet, 52 conductors in the high-voltage winding and 53 insulating cylinders made of pressed tin.
Lederen i lavspenningsviklingen har det på fig. 1 viste tverrsnitt, dvs. den omfatter to lederdeler 10 og 11 som er sammenføyet med en limfuge (dannet av skiktet 12) inneholdende avstandselementet 13, og er omgitt av isolasjonen 17. The conductor in the low-voltage winding has it in fig. 1 shown in cross section, i.e. it comprises two conductor parts 10 and 11 which are joined with an adhesive joint (formed by the layer 12) containing the spacer element 13, and is surrounded by the insulation 17.
Lederne 52 i høyspenningsviklingen, som kan være parallellkoblede eller seriekoblede, omfatter hver og en (fig. 1) to lederdeler 54, resp. 55 av tykkelse 1,5 mm og bredde 10 mm på flatsiden og en mellom dem anordnet limfuge dannet av et isolerende skikt 56 av samme slag som skiktet 12, dvs. inklu-sive avstandselementet 13 (ikke vist på fig. 5). Lederiso-lasjonen 57 består av flere vinninger papirbånd som er viklet spiralgående med overlapping. Høyspenningsviklingen 49 utgjør fortrinnsvis en stabilisert skivevikling med et betydelig større antall ledere i hver skive enn de tre som er vist på fig. 3-5, hvor en enklere vikling er vist for å lette for-ståelsen av figurene. The conductors 52 in the high-voltage winding, which can be parallel-connected or series-connected, each comprise (Fig. 1) two conductor parts 54, resp. 55 of thickness 1.5 mm and width 10 mm on the flat side and an adhesive joint arranged between them formed by an insulating layer 56 of the same type as layer 12, i.e. including the spacer element 13 (not shown in Fig. 5). The conductor insulation 57 consists of several turns of paper tape which are wound spirally with overlapping. The high-voltage winding 49 preferably constitutes a stabilized disk winding with a significantly larger number of conductors in each disk than the three shown in fig. 3-5, where a simpler winding is shown to facilitate the understanding of the figures.
I henhold til en alternativ utførelsesform er det isolerende skikt 12 i lederen ifølge fig. 1 bygget opp av en herdbar harpiks og inneholder et 0,15 mm tykt og 12 mm bredt avstandselement 13 i form av den ovenfor beskrevne tynne og porøse filt med overflatevekt 30 g/m 2. Den herdbare harpiks, som avstandselementet er impregnert med, utgjøres av en epoxyharpiks (såsom "Araldit B" fra Ciba, Sveits) blandet med dicyandiamid som herder, idet der benyttes 3 vektdeler pr. According to an alternative embodiment, the insulating layer 12 in the conductor according to fig. 1 built up from a hardenable resin and contains a 0.15 mm thick and 12 mm wide spacer element 13 in the form of the above-described thin and porous felt with a surface weight of 30 g/m 2. The hardenable resin, with which the spacer element is impregnated, constitutes of an epoxy resin (such as "Araldit B" from Ciba, Switzerland) mixed with dicyandiamide as a hardener, using 3 parts by weight per
100 vektdeler epoxyharpiks. Det isolerende skikt, som er tørt, er anordnet løst mellom lederdelene som et separat bånd, og det er således ikke limt til lederdelene 10 og 11. Lederen er som i det foregående tilfelle omgitt av en omhylling 17 av spiralviklet papirbånd. Lederen anvendes i lavspenningsviklingen og med modifiserte dimensjoner (hver lederdel med tykkelse 1,5 mm og flatsidebredde 10 mm) i høy-spenningsviklingen i transformatoren ifølge fig. 3-5. 100 parts by weight epoxy resin. The insulating layer, which is dry, is arranged loosely between the conductor parts as a separate band, and is thus not glued to the conductor parts 10 and 11. As in the previous case, the conductor is surrounded by an envelope 17 of spirally wound paper tape. The conductor is used in the low-voltage winding and with modified dimensions (each conductor part with thickness 1.5 mm and flat side width 10 mm) in the high-voltage winding in the transformer according to fig. 3-5.
I denne alternative utførelsesform dannes limfugen først etter at lederen er blitt formet til en vikling. Den herdbare harpiks i de isolerende skikt 12 og 56 herdes derved under dannelse av en mekanisk sterk limfuge mellom lederdelene når viklingen tørkes ved ca. 130°C i ca. 12 timer. Ved at lederne både ved lavspenningsviklingen og i høyspen-ningsviklingen er anordnet med lederdelenes flatsider og det isolerende skikt orientert i viklingens aksialretning blir den ytre del i lederen strukket mer enn den indre del. Som følge herav blir det isolerende skikt utsatt for et radielt trykk. In this alternative embodiment, the adhesive joint is formed only after the conductor has been formed into a coil. The hardenable resin in the insulating layers 12 and 56 is thereby hardened to form a mechanically strong adhesive joint between the conductor parts when the winding is dried at approx. 130°C for approx. 12 hours. As the conductors both in the low-voltage winding and in the high-voltage winding are arranged with the flat sides of the conductor parts and the insulating layer oriented in the axial direction of the winding, the outer part of the conductor is stretched more than the inner part. As a result, the insulating layer is exposed to a radial pressure.
Transformatorhuset 43 fylles i begge de illustrerte utførelsesformer med transformatorolje etter tørkningen. The transformer housing 43 is filled in both illustrated embodiments with transformer oil after drying.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7910171A SE445690B (en) | 1979-12-11 | 1979-12-11 | ENVIRONMENTAL INSULATION PROVIDED WIRING FOR WINDING FOR TRANSFORMERS AND OTHER INDUCTIVE DEVICES |
| SE8007350A SE452218B (en) | 1980-10-20 | 1980-10-20 | Insulated conductor for transformer windings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO803716L true NO803716L (en) | 1981-06-12 |
Family
ID=26657410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO803716A NO803716L (en) | 1979-12-11 | 1980-12-09 | ISOLATED WIRING WIRE IN TRANSFORMERS AND OTHER INDUCTIVE DEVICES |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4552990A (en) |
| EP (1) | EP0030338B1 (en) |
| BR (1) | BR8008058A (en) |
| CA (1) | CA1170732A (en) |
| DE (1) | DE3070426D1 (en) |
| NO (1) | NO803716L (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59150405A (en) * | 1983-02-10 | 1984-08-28 | Toshiba Corp | Normal-conductive coil and manufacture of the same |
| GB8916332D0 (en) * | 1989-07-17 | 1989-08-31 | Gec Alsthom Ltd | Transformer winding conductor |
| US5393933A (en) * | 1993-03-15 | 1995-02-28 | Goertz; Ole S. | Characteristic impedance corrected audio signal cable |
| DE4438187A1 (en) * | 1994-10-26 | 1996-05-02 | Abb Management Ag | Electrical conductor for windings with distributed overload voltage protection |
| ATE189555T1 (en) * | 1996-09-30 | 2000-02-15 | Asta Elektrodraht Gmbh | MULTIPLE PARALLEL CONDUCTORS FOR WINDINGS OF ELECTRICAL MACHINES AND DEVICES |
| SE9704423D0 (en) | 1997-02-03 | 1997-11-28 | Asea Brown Boveri | Rotary electric machine with flushing support |
| SE9704422D0 (en) | 1997-02-03 | 1997-11-28 | Asea Brown Boveri | End plate |
| US6080935A (en) * | 1998-07-21 | 2000-06-27 | Abb Power T&D Company Inc. | Folded insulated foil conductor and method of making same |
| SE516548C2 (en) | 1999-05-27 | 2002-01-29 | Abb Ab | Rotary electric machine where the winding is a high voltage cable with reduced eddy current losses |
| WO2001075908A1 (en) * | 2000-04-03 | 2001-10-11 | Abb Power T & D Company Inc. | Dry type semi-conductor cable distribution transformer |
| FR2843975B1 (en) * | 2002-09-04 | 2008-11-14 | Kermel | FIBERS AND FIBRIDES, PROCESS FOR OBTAINING THEM, ARTICLES OBTAINED THEREFROM THESE FIBERS AND / OR FIBRIDES. |
| EP1420507B1 (en) * | 2002-11-16 | 2008-01-09 | Minebea Co., Ltd. | Miniature motor with permanent magnetic rotor |
| CA2736086A1 (en) * | 2008-09-03 | 2010-03-11 | Usg Interiors, Inc. | Electrically conductive element, system, and method of manufacturing |
| CA2735987A1 (en) * | 2008-09-03 | 2010-03-11 | Usg Interiors, Inc. | Electrically conductive module |
| MX2011002175A (en) * | 2008-09-03 | 2011-04-07 | Usg Interiors Inc | Electrically conductive tape for walls and ceilings. |
| EP2325849B1 (en) * | 2009-11-19 | 2014-01-08 | Essex Europe | Continuously transposed conductor |
| JP6048910B2 (en) * | 2011-11-14 | 2016-12-21 | 住友電気工業株式会社 | Reactor, coil molded body, converter, and power converter |
| WO2015033821A1 (en) * | 2013-09-06 | 2015-03-12 | 古河電気工業株式会社 | Flat electric wire, manufacturing method thereof, and electric device |
| WO2015033820A1 (en) * | 2013-09-06 | 2015-03-12 | 古河電気工業株式会社 | Flat electric wire, manufacturing method thereof, and electric device |
| JP6200480B2 (en) * | 2015-11-20 | 2017-09-20 | 古河電気工業株式会社 | Assembly wire, method for manufacturing the same, and electrical equipment |
| JP6822252B2 (en) * | 2017-03-22 | 2021-01-27 | 三菱マテリアル株式会社 | Coil and its manufacturing method |
| RU210354U1 (en) * | 2021-10-29 | 2022-04-11 | Акционерное общество "Москабельмет" (АО "МКМ") | WINDING WIRE WITH RECTANGULAR COPPER CORE |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH295499A (en) * | 1951-12-13 | 1953-12-31 | Oerlikon Maschf | Process for the production of high-voltage winding insulation for electrical machines. |
| GB720076A (en) * | 1951-12-13 | 1954-12-15 | Oerlikon Maschf | Method of insulating a high tension dynamo-electric machine winding |
| FR1076646A (en) * | 1952-05-03 | 1954-10-28 | Oerlikon Maschf | Insulation for bundles of electrical conductors |
| FR1226319A (en) * | 1958-06-05 | 1960-07-11 | Westinghouse Electric Corp | Polyhalethylene based electrical insulation |
| GB1103764A (en) * | 1963-12-17 | 1968-02-21 | Pirelli General Cable Works | Improvements in or relating to composite conductors for heavy current windings |
| GB1156133A (en) * | 1966-04-22 | 1969-06-25 | Parsons C A & Co Ltd | Improvements in and relating to Insulated Electrical Conductors |
| US3543205A (en) * | 1968-08-05 | 1970-11-24 | Westinghouse Electric Corp | Electrical windings |
| US3723797A (en) * | 1970-06-05 | 1973-03-27 | Asea Ab | Insulated coil for arrangement in a slot in the stator or rotor of an electrical machine |
| BE793219A (en) * | 1971-12-22 | 1973-06-22 | Westinghouse Electric Corp | FRETTING TAPES |
| DE2208029B2 (en) * | 1972-02-17 | 1976-06-24 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | HIGH-VOLTAGE-PROOF INSULATION FOR WINDING CONDUCTORS OF LARGE ELECTRICAL MACHINERY |
| US3757029A (en) * | 1972-08-14 | 1973-09-04 | Thomas & Betts Corp | Shielded flat cable |
| JPS5232062B2 (en) * | 1972-12-25 | 1977-08-19 | ||
| US3819443A (en) * | 1973-01-15 | 1974-06-25 | Sun Chemical Corp | Method for making multifinned shielding tapes |
| JPS5913123B2 (en) * | 1973-03-05 | 1984-03-28 | 株式会社フジクラ | Transposed wire |
| DE2330786C3 (en) * | 1973-06-16 | 1978-11-23 | Transformatoren Union Ag, 7000 Stuttgart | Winding from double disc coils for the effective resistance of filter circuit reactors |
| US3828120A (en) * | 1973-10-23 | 1974-08-06 | Anaconda Co | Flexible flat power cable |
| DE2402149A1 (en) * | 1974-01-17 | 1975-07-24 | Transformatoren Union Ag | Composite conductor for transformer manufacture - has heat curing binder impregnation in carrier material |
| SE398570B (en) * | 1976-04-26 | 1977-12-27 | Asea Ab | METHOD OF APPLYING A BAND OF INSULATION MATERIAL IN THE LENGTH DIRECTION OF A MAINLY RECTANGULAR ELECTRICAL CONDUCTOR AND DEVICE FOR PERFORMING THE KIT |
| US4109375A (en) * | 1976-11-22 | 1978-08-29 | Westinghouse Electric Corp. | Method of making adhesive coated electrical conductors |
| US4204087A (en) * | 1976-11-22 | 1980-05-20 | Westinghouse Electric Corp. | Adhesive coated electrical conductors |
| US4259141A (en) * | 1977-04-22 | 1981-03-31 | Asea Aktiebolag | Apparatus for application of a tape of insulating material in the longitudinal direction of a substantially rectangular electrical conductor |
| JPS53141401A (en) * | 1977-05-16 | 1978-12-09 | Hitachi Ltd | Conductor for electric machinery |
-
1980
- 1980-11-28 DE DE8080107450T patent/DE3070426D1/en not_active Expired
- 1980-11-28 EP EP80107450A patent/EP0030338B1/en not_active Expired
- 1980-12-09 NO NO803716A patent/NO803716L/en unknown
- 1980-12-10 CA CA000366498A patent/CA1170732A/en not_active Expired
- 1980-12-10 BR BR8008058A patent/BR8008058A/en unknown
-
1983
- 1983-05-19 US US06/495,727 patent/US4552990A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US4552990A (en) | 1985-11-12 |
| CA1170732A (en) | 1984-07-10 |
| EP0030338A1 (en) | 1981-06-17 |
| DE3070426D1 (en) | 1985-05-09 |
| EP0030338B1 (en) | 1985-04-03 |
| BR8008058A (en) | 1981-06-23 |
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